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Adsorptive Removal of Non-Ionic Surfactants from
Water Using Granite Sand
M. Nasiruddin Khan* and U. Zareen
Department of Chemistry, University of
Karachi Karachi-75270, PAKISTAN
(Received 27 September 2003, Accepted 15
March 2004)
The adsorption of
Triton X-100 in aqueous solution on the granite sand has been investigated to
evaluate its ability as an adsorbent. Various parameters such as agitation time,
adsorbent dose, adsorbent size, initial concentration of adsorbate, pH,
temperature, and effect of interference ions were studied on the laboratory
scale to establish optimum conditions for the removal of TX-100 from the
effluents of different industries. Isotherm data were analyzed for possible
agreement with the Langmuir and Frendlich adsorption isotherm equations. The
first order rate equation by Lagergren was tested on the kinetic data.
The rate of adsorption was conformed a pseudo first order kinetics with good
correlation coefficient. The value of activation energy of sorption (Ea)
was obtained as 44.6 kJ mol-1. Results showed that granite sand
exhibit reasonably good surfactant removals for non-ionic types. The possible
role of the adsorbent in a chromatographic column was also worked out.
Keywords:
Adsorption, TritonX-100, Granite sand, Langmuir
and Freundlich isotherms, Adsorption kinetics
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